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|    comp.ai.fuzzy    |    Fuzzy logic... all warm and fuzzy-like    |    1,275 messages    |
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|    Message 414 of 1,275    |
|    Ernst Murnleitner to All    |
|    Re: Weights incorporation in Fuzzy infer    |
|    13 Feb 05 13:19:01    |
      From: mur@awite.de              >       >>>>Why not simple multiplying the (resulting) membership value(s) by the       >>>>wight?       >>>       >>>Because it is infeasible. Values of the membership function are not       >>>multiplicative in the classic fuzzy set theory.       >>              It is suggested in some fuzzy books. But maybe it is more logical not to       use a WITH operator but use an additional condition like:              if .... AND weight = full then ...              If one sets the (one) set the way, that a weight of 0.5 would be a truth        value of 0.5 (e.g. a triangle beginning at 0 with a truth value of 0       and have a maximum of 1 at 1), couldn't this be used instead of WIDTH?                     >       > PROD-operator is used empirically without any justification. It isn't       > fuzzy. It might be called probabilistic under some, extremely rare,       > circumstances. Though as normally used, it is plain shamanic.              OK, you can find it in many books about fuzzy logic. But for me, this       operator never seemed to be logic used as "AND". As you explain: A and A       is not A?              However, I used it for WITH. If you want to weight a rule by e.g. 0.5:       Multiplication by 0.5 could be regarded as propability. Or not?                     Greetings              Ernst              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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